Coherent light scattering from a two-dimensional Mott insulator

Details Coherent light scattering from a two-dimensional Mott insulator Coherent light scattering from a two-dimensional Mott insulator

2011-02-18

arxiv.org/abs/1102.3859v1

Phys. Rev. Lett. 106, 215301 (2011)

Physics

Condensed Matter

Quantum Gases

4 pages, 4 figures

Scientific paper

10.1103/PhysRevLett.106.215301

We experimentally demonstrate coherent light scattering from an atomic Mott insulator in a two-dimensional lattice. The far-field diffraction pattern of small clouds of a few hundred atoms was imaged while simultaneously laser cooling the atoms with the probe beams. We describe the position of the diffraction peaks and the scaling of the peak parameters by a simple analytic model. In contrast to Bragg scattering, scattering from a single plane yields diffraction peaks for any incidence angle. We demonstrate the feasibility of detecting spin correlations via light scattering by artificially creating a one-dimensional antiferromagnetic order as a density wave and observing the appearance of additional diffraction peaks.

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